Machine for forming glass articles



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Dec. 2, 1930. R. LA FRANCE I MACHINE FOR FORMING GLASS ARTICLES rfi-Z-mvrmori Hdd/xl la frane/ De@ 2, 1930. R. LA FRANCE 1,78391 MACHINE FORFORMING' GLASS ARTICLES Original Filed April 22, 1924 6 Sheets-Sheet 3Dec. 2, 1930. R. LA FRANCE MACHINE FOR FORMING GLASS ARTICLES OriginalFiled April 22, 1924 6 Sheets-Sheet 4 /f//s rrk Dec. 2, 1930. R. LAFRANCE MACHINE FOR FORMING GLASS ARTICLES 1924 6 Sheets-Sheet 5 OriginalFiled April 22 D.|\ om Tw mf vh Nd ld m f//J Afri- Dec. 2, 1930. R. L AFRANCEv MACHINE FOR FORMING GLASS ARTICLES 6 Sheets-Sheet 6 OriginalFiled April 22, 1924 Isl/5 Hrrff.

. ularly to machines of the Owens type in.

. suction, a' cooperating finishin Patented Dec. 2, 1930 UNITED STATESmiTlzNT OFFICE :aIcHAnD Ln FRANCE, orroLEno, omo, AssIeNon 'roOWENS-ILLINOIS emes comrANY, or ToLnno, omo, a CORPORATION or omoMACHINE SFOR FORMING GLASS ARTICLES .Original application led April 22,1924,

Serial No.'708,172. Divided and this application illed ctober 30,

1926. Serial No. 145,140.

The present invention relates to machines for forming glass articles,and more particwhich blank molds on a continuously rotating carriage dipvinto a pool of molten glass and are iilled by suction, the blanks beinglater transferred to finishing molds in which they are blown to finishedform. In machines of this type, a series1 of heads or units are arrangedat equal intervals around the mold carriage, each unit comprising ablank mold or molds into which the glass is drawn by mold or molds, andmechanism for effecting the suction, blowing and various mechamcaloperations required in forming the articles.

In a great majority of machines of this type-now in use, a singlegathering mold is provided on each head or unit so that only one blankof glass is gatheredat a time. In other machines, each mold is providedwith a plurality of moldcavities, so that a number of blanks aregathered simultaneously.

An object of the invention is to lprovide a practical and ecient machineofthe character indicated in which each head or unit is equipped with aplurality of molds each havlng severalcavitiesso that production isgreatly increased, and in the attainment of this object I have providedvarious novel features fof construction and operation, among which maybe noted the following:

A feature of the present invention consists in the provision of novelpressure equalizing mechanisms used in connection with the blank andfinishing molds, such mechanisms 'operating automatically to insureuniform closing and operation of the several molds.

Other features of novelty will appear hereinafter.

The present application is a division of my 'co-pending application, S.N. 708,172, filed April 22, 1924, on which Patent 1,641,497 was grantedSeptember 6, 1927.

In the accompanying drawings Fig. 1 is a sectional elevation of themachine, parts being broken away.

' Fig. 2 is a plan View of the finishing mold frame and parts carriedthereby, and illustrating the equalizing mechanism in* the -positionoccupied while the molds are closed.

Fig. 3- is a part sectional plan 'view of the nlshlng mold carryingframe showing the finishing mold-in open position, and the relation ofthe pressure equalizingmechanism to associated parts. `Fig. 4 is adetailed sectional view at the line IV-IV of Fig. 3.

FFig. 5 isa sectional view at the line V-V of l Fig. 6 is a plan viewshowing the blank mold carrying frame the blank molds, and theiroperating mec anism including the pressure equalizing means.

Fig. 7 1s a sectional view at the line VII-#VII of Fig. 6.v

Fig. 8 is a sectional elevation at VIII- VIII of Fig. 6.

Fig. 9 is a bottom plan view of a p air of blank mold sections andequalizing mechanism. l

Fig. 10 is a persective view of a blank mold carrying frame.

Referring particularly to Figure 1, the machine comprises a base onwhich is mountf ed a casting 61 supporting the mold carriage whichrotates continuously about a central the line stationary columnincluding a section 62.A

Stationary cams for actuating various parts of the machine are mountedon said column. The mold carriage comprises a lower frame portion 64 andan upper frame portion 65,

united by the frames which support the indiwork including standardsrising from the frame member 64, upwardly and inwardly inclinedframemembers 67 and Vertical portions 68. Mounted to reciprocate verticallyin the frame A, is a frame B to the lower end ofV which -is bolted ablowing head C which carries the neck molds D.

The blank molds E comprise sections 80 and 81 carried respectively onframe members Fand G (see Figs'. 6, 8 and 9) supported on the frame B sothat the blank molds are carried up and down with the frame B. Theframes F and G are mounted for hori- Zontal reciprocation to move theblank mold sections from their separated position (Fig. 8) to the closedposition shown in full lines in Figure 6. Referring to Figure 10, theplates 82 forming part of the frame B are boltedto rails 83 on which theframe G is slidable horizont-ally. Connected to the rails 83 by bolts 84are inner rails or tracks85 on which the frame F is mounted to slidehorizontally. The frame F has fixed thereto rack bars 86 driven bypinions 87 on a shaft 88 journalled in the sides of the frame B. Theframe G supports a rack bar 89 running in mesh with one of the pinions87.

The movement of the frames F and G for opening and closing the blankmolds is controlled by a cam 91 (Figs. 1 and 8) on which runs a roll 92on a slide block 93 mounted to slide in guideways 94 on the frame A. Theslide block 93 is connected through a pair of rods or links 95 to aslide block 99 mounted to reciprocate on the frame Gr. The connectionbetween the links 95 and the block 93 (see Fig. 8) comprises a head 96pivoted to said links and slidable on a rod 97 attached to the slideblock 93. A coil spring 98 interposed between said head and the end ofthe rod provides a yieldable connection which prevents excessive strainor. breakage of parts if any obstruction prevents the mold frames frommoving freely under the infiuence of the cam. The connection between theslide block 99 and the frame G (see Figs. 6 and 8) comprises anequalizing lever 110 connected at its center to the block 99 by a pivotpin 111. The lever 110 is connected at one end through a link 112 to theframe G and at its opposite end is connected through a link 113 to therack bar 89.

The stationary cam 91 is shaped to effect the opening and closingmovements of the molds E at the required times as the carriage rotates.As said cam moves the roll 92 inward or toward thercenter ofthe machine,the frame G and rack bar 89 are drawn inward through the connectionsjust described, thereby moving the blank mold sections 81 inward. Theinward movement of the rack bar 89 operates through the pinion 87 andrack 86 to move the frame F and blank mold sections thereon outward tomeet the inwardly moving sections 81, thereby closing the blank molds.The inward movement of the frame G may be arrested and the position ofthe mold sections 81 determined by the frame G striking the end of theguide rails 83 (Fig. 10). The equalizing lever 110 permits the blankmolds to be fully closed and centered. Thus, if the frame G is broughtto its stop position before the blank molds are fully closed, the lever110 will be moved about its point of connection with the frame G as afulcrum, thereby causing a continued movement of the rack bar 89, pinion87 and rack bar 86 to complete the movement of the frame member F andthereby completely close the molds. In a similar manner, the equalizinglever operates to center and close the molds if the frame member Fshould be brought to its stop position before the molds are fullyclosed.I

Equalizing levers 114 (Figs. 6 and 9) are connected by pivots 114a tothe frames F and G. Each lever bears at its endsagainst a pair of moldsections 80 or 81. If, during the mold-closing movement of the frame F,for example, one of the mold sections 80 is arrested by its centeringpins 80a before the other section, the final movement is transmittedthrough the lever 114 to bring the other mold section to its closedposition and equalize the pressure on the two mold sections. The .moldsections have sufficient play on their supporting pins 80b to permitthis centering movement and equalization of pressure.

The frame B which carries the blank molds E is lowered to dip the moldsinto the molten glass in a tank 133 (Fig. 1) for gathering charges bysuction as the molds travel over the tank. The lowering and lifting ofthe molds is edected by a stationary cam 134 (Fig. '1). A cam roll 135running on the cam 134 is carried by a slide block 136 mounted toreciprocate radially of the machine in guides 137 on the frame A, saidblock hav ing suitable connection to the frame B.

The finishing molds and their actuating mechanism will be understood byreference to Figures 1, 2 and 3. The finishing molds F for each head orunit are carried on a finishing mold frame 261 having trunnions 262 bywhich the frame is pivotally mounted on the mold carriage, permittingthe frame to swing downward.to the Figure 1 position for passing'beneaththe tank 133. After passing beyond the tank, the frame is swung upwardto the horizontal position, and the finishing molds close around theblanks which at this time are suspended from the neck molds, the blanksbeing then blown to their final shape in the finishing molds. The

swinging movements of the mold frame 261 are controlled by a stationarycam track 263 0n which runs a roll 264 on the mold frame.

The mold frame 261 carries a pair of finishing molds, each o f whichcomprises an inner section 265 and an outer section 266 mounted to swingabout a pivot 267 for opening and closing the mold. Said sections arerespectively connected through links 268 to arms 269 and 270 having apivot 271. The arm 269 is connected through a link 272 to an equalizinglever 273. The arm 270 is formed with a gear segment 274 running in meshwith a gear segment 275, the latter connected through a link 276 t0 thelever 273. The

iii!

' lever 278 sections to their closed position. The equalizing lever 273is connected by a pivot 277 to a' ivoted at 279 to the mold frame. Eachfinishing mold frame carries a pair of the levers 278 and the operatingconnections just' described between said levers and the molds. 'Ehelevers 278 are connected through a pair ofv links 281 to a pivot pin 282mounts ed in a slide bar 283 slidable radially of the machine in guides284 on the mold frame. The slide 283 is actuated by a stationary cam 285(Fig. 1) on. which runs a cam roll 286 on a slide block 287 which has anoperating connection 288 with the slide 283 (see Figs. 2 and 3).

The linishing molds are opened by an inward movement of the cam roll 286which operates through the connections just described to move the partsfrom the position shown in Figure 2 to that shown in Figure 3. That isto sa as the slide 283 moves inward or toward t e center of themachine,it operates through the links 281 to swing the levers 27 8 abouttheir fulcrums. During this movement, the link 272 swings the arm 269suiiiciently to withdraw the mold section 265 to the Figure 3 position.At the same time, the link 276 operating through the gears 275 and 274swings the mold section 266 through an arc-of approximately 90 degreesto the Figure 3 position, out of the path of discharge of the finishedbottles. The movement of the outer mold section 266V is considerablygreater than lthat of the inner section, owing to the fact that the link276 is connected to the lever 273 at a greater distance from the fulcrum279 than the link 272. The arc through which the mold section 266 swingscould also be variedby relatively varying the radii of the gearsegments. Theuequalizing lever 273 has a limited movement about itsfulcrum, determined by stops 289 on the lever 278. This permits a slightrelative movement of the` Modifications may be resorted to within thespirit and scope of my invention.

What I claim is:

1. In a glass forming machine, the combination of a pair of moldsarranged side by side and each comprising separable sections, a pair oflevers, operating connections between each lever and thesections of onemold for closing the molds when the levers are operated in onedirection, a slide block, and toggle links pivotally connected to saidslide block and to said levers for transmitting motion from the slideblock to the levers, the pivotal point of connection between each togglelink and the slide block being shiftable relatively to the slide blockto permit an equalization of pressure transmltted through the togglelinks to the molds when one mold is brougth to a closed position inadvance of the other.

2. In a glass forming machine, the combinationof a air vof moldsarranged side by side and eac comprising separable sections, a pair oflevers, operating connections between each lever and the sections of onemold for closing the molds when the levers are operated in one directiona slide block, and toggle links having a common fulcrum on said slideblock and connected at their outer ends to said levers, said ulcrumshiftable on the slide block in a direction to permit an equalization ofthe pressure transmitted through the toggle links to the molds when onemold is brought to a closed position in advance of the other.

Si ned at Toledo, in the county of Lucas and tate of Ohio, this 27th dayof October,

RICHARD LA FRANCE.

5) is mounted fora limited lateral movement in the slide block 283. Theopening 291 in said block which receives the pivot pin is substantiallyrectangular, as shown in Figure 5,

and somewhat longer than the diameter ofv for completely closing theother mold.

